**Core Concept**
Waardenburg's syndrome is a rare genetic disorder characterized by deafness, pigmentation anomalies, and other systemic features. It is caused by mutations in genes involved in neural crest cell migration and development, leading to abnormalities in the formation of the inner ear, hair, and melanocytes.

**Why the Correct Answer is Right**
Waardenburg's syndrome is characterized by a range of clinical features, including sensorineural hearing loss, congenital white forelock, dystopia canthorum (lateral displacement of the inner canthi), and pigmentation anomalies such as depigmented or hypopigmented patches. The syndrome is often associated with mutations in the PAX3, MITF, SNAI2, or EDNRB genes, which play critical roles in the development and migration of neural crest cells. These mutations disrupt the normal development of the inner ear, hair, and melanocytes, leading to the characteristic features of the syndrome.

**Why Each Wrong Option is Incorrect**
* **Option A:** Not enough information provided to assess the validity of this option.
* **Option B:** Not enough information provided to assess the validity of this option.
* **Option C:** Not enough information provided to assess the validity of this option.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that Waardenburg's syndrome is a rare genetic disorder with a range of clinical features. A key feature of the syndrome is sensorineural hearing loss, which is often profound and bilateral. Patients with Waardenburg's syndrome may also have characteristic pigmentation anomalies, such as a white forelock or depigmented patches.

**Correct Answer:** A